Kids monster movie

I rented this movie at blockbuster maybe 8 years ago. It was about this boy who found a movie reel and he played it. But then three monsters came out of it and like went through the town. There was a mannequin man who would take people so that he could replace his mannequin parts with human parts, like his arm. I also think there was a werewolf or maybe it was a wererat? I don’t remember what the other monster was.